/CHANGES/uniq-via-gensym

http://github.com/alimoeeny/arc · #! · 17 lines · 13 code · 4 blank · 0 comment · 0 complexity · e71609bed186a1cf02cf34e609903e9f MD5 · raw file 

    

  1. Replaces arc's implementation of 'uniq with mzscheme's 'gensym. This has two
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  2. effects. First and foremost, 'uniq now returns a "true" gensym - an uninterned
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  3. symbol:
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  5.     arc> (= s (uniq))
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  6.     g1831
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  7.     arc> (is s 'g1831)
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  8.     nil  ; in vanilla arc, this would be t
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  10. Second, 'uniq takes an optional argument. If present, this argument must be a
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  11. symbol or string, and will be used as the prefix for the gensym:
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  13.     arc> (uniq 'i-am-a-gensym)
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  14.     i-am-a-gensym1833
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  16. This is useful for giving gensyms more informative names, which can be helpful
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  17. when trying to read macro-generated code.
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